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38 lines
1.0 KiB
Diff
38 lines
1.0 KiB
Diff
From 2411a3e2b5dfa4784bbe2548f8ef0ce1aea0379e Mon Sep 17 00:00:00 2001
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From: Jason Jin <Jason.jin@freescale.com>
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Date: Thu, 4 Aug 2011 09:59:55 +0800
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Subject: [PATCH 50/52] Update the DMA map function for CF platform
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In the DMA map, only the dcache need to be flushed.
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Flush both dcache and icache will decrease the system
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performance.
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Signed-off-by: Jason Jin <Jason.jin@freescale.com>
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---
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arch/m68k/kernel/dma.c | 12 ++++++++++--
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1 files changed, 10 insertions(+), 2 deletions(-)
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--- a/arch/m68k/kernel/dma.c
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+++ b/arch/m68k/kernel/dma.c
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@@ -94,10 +94,18 @@ void dma_sync_single_for_device(struct d
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{
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switch (dir) {
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case DMA_TO_DEVICE:
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- cache_push(handle, size);
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+#if defined(CONFIG_M5445X) || defined(CONFIG_M5441X)
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+ flush_dcache_range(handle, handle + size);
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+#else
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+ flush_dcache();
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+#endif
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break;
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case DMA_FROM_DEVICE:
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- cache_clear(handle, size);
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+#if defined(CONFIG_M5445X) || defined(CONFIG_M5441X)
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+ cf_dcache_inv_range(handle, handle + size);
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+#else
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+ flush_dcache();
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+#endif
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break;
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case PCI_DMA_BIDIRECTIONAL:
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flush_dcache();
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